There is disclosed a paste composition comprising a mixture of: an organic binder having an acidic functional group; at least one polyvalent metal or a polyvalent metallic compound; and an anion-adsorptive substance having the property of adsorbing an anion of said organic binder. The paste composition is capable of inhibiting gelation in a mixture of an organic binder having an acidic functional group with a polyvalent metal or a polyvalent metallic compound and is excellent in storage stability.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A paste composition comprising a mixture of: an organic binder having an acidic functional group; at least one polyvalent metal or polyvalent metallic compound; and an anion-adsorptive substance having the property of adsorbing an anion of said organic binder.
2. The paste composition according to claims 1 , wherein said anion-adsorptive substance is a powder having a mean particle diameter of about 0.01 to 50 m.
3. The paste composition according to claim 2 , wherein the content of said anion-adsorptive substance is about 0.001 to 30% by weight based on the total weight of the paste composition.
4. The paste composition according to claim 3 , wherein said anion-adsorptive substance is at least one member selected from the group consisting of hydroxyapatite, hydrotalcite, zirconium phosphate and antimony oxide hydrate.
5. The paste composition according to claim 3 , wherein said anion-adsorptive substance is hydroxyapatite.
6. The paste composition according to claim 1 , wherein said organic binder is a (meth)acrylic polymer having a carboxyl group in a side chain.
7. The paste composition according to claim 1 , wherein the paste composition is a photosensitive paste which further comprises a photosensitive organic component.
8. The paste composition according to claim 1 , wherein said polyvalent metal is at least one powdered metal selected from the group consisting of copper, aluminum, palladium, nickel and iron.
9. The paste composition according to claim 1 , wherein said polyvalent metallic compound is a powdered glass; a powdered ceramic comprising at least one member selected from the group consisting of boron, barium, magnesium, aluminum, calcium, lead, bismuth, copper, zinc, zirconium, niobium, chromium, strontium and titanium; or a combination thereof.
10. A multilayer substrate comprising a fired laminate comprising a plurality of layers of the paste composition according to claim 1 .
11. A green sheet comprising a molded slurry, said slurry comprising a mixture of: an organic binder having an acidic functional group; a polyvalent metallic compound; and an anion-adsorptive substance having the property of adsorbing an anion of said organic binder.
12. The green sheet according to claim 11 , wherein said anion-adsorptive substance is a fine particle having a mean particle diameter of about 0.01 to 50 m.
13. The green sheet according to claim 12 , wherein the content of said anion-adsorptive substance is about 0.001 to 30% by weight based on the total weight of the slurry.
14. The green sheet according to claim 12 , wherein said anion-adsorptive substance is at least one member selected from the group consisting of hydroxyapatite, hydrotalcite, zirconium phosphate and antimony oxide hydrate.
15. The green sheet according to claim 14 , wherein said organic binder is a (meth)acrylic polymer having a carboxyl group in a side chain.
16. The green sheet according to claim 15 , wherein said anion-adsorptive substance is hydroxyapatite.
17. The green sheet according to claim 11 , wherein said slurry further comprises a photosensitive organic component.
18. The green sheet according to claim 11 , wherein said polyvalent metallic compound is a powdered glass; a powdered ceramic comprising at least one member selected from the group consisting of boron, barium, magnesium, aluminum, calcium, lead, bismuth, copper, zinc, zirconium, niobium, chromium, strontium and titanium; or a mixture thereof.
19. A multilayer substrate comprising a fired laminate of a plurality of green sheets according to claim 11 .
20. A multilayer substrate according to claim 19 having at least one via hole therein.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
March 20, 2000
February 12, 2002
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